Senior Privacy Engineer, Browser Security

Mozilla; España; Remote; EUR 70,000 - 100,000; Full time

Benefits offered by this job

Bonus plans

Retirement contributions

Wellness days

Holidays + birthday

Home office stipend

Professional development budget

Parental leave

Employee referral program

Life/AD&D/Disability insurance

Job summary

Mozilla is seeking a Senior Software Engineer to join the Privacy Team and advance the Firefox Web Platform. You will work on privacy protections, anti-tracking, and threat intelligence, contributing to Gecko and the broader browser stack.

This role supports a remote arrangement within Spain, collaborating across Europe and the US. Ideal candidates have 4+ years in C++/Rust, strong memory-safety and multi-threading knowledge, and a track record of delivering complex features on tight schedules.

Qualifications

• BS in CS or related field, or equivalent experience.
• 4+ years in C++ and Rust.
• Experience with multi-threading and memory safety.
• Proven ability to deliver complex features on schedule.
• Strong written and verbal communication.

Responsibilities

• Implement privacy protections into Firefox to reduce tracking.
• Improve Gecko architecture and performance.
• Develop C++, JavaScript, and Rust components end-to-end.
• Collaborate with distributed teams across Europe and US.

Skills

C++

Rust

Memory safety

Multi-threaded

Open source

Communication

Education

Bachelor's degree in CS

Tools

Gecko

Python

SQL

Job description

Mozilla is seeking a Senior Software Engineer to join the Privacy Team and advance the Firefox Web Platform. You will work on privacy protections, anti-tracking, and threat intelligence, contributing to Gecko and the broader browser stack.

This role supports a remote arrangement within Spain, collaborating across Europe and the US. Ideal candidates have 4+ years in C++/Rust, strong memory-safety and multi-threading knowledge, and a track record of delivering complex features on tight schedules.